# iTruss vs A

The clearest difference is price: iTruss at Free against A's $9.99. iTruss also leads on iOS requirement (11.0 vs 18.6). A's advantage is update cadence (every 2 weeks vs every 23 months). On in-app purchases and device support there is nothing between them.

iTruss is free to download; A costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iTruss ships an update every 23 months, A every 2 weeks. The most recent releases landed on June 10, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | iTruss | A |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.1 (15 ratings)](https://appshunter.io/ios/app/itruss/id363376468/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 23 months | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Size | 70 MB | 10 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xtreme Structures & Fabrication LLC](https://appshunter.io/developer/363376471) | [Jutarus Ratanasethakul](https://appshunter.io/developer/1454380236) |

## What reviewers say

### iTruss

[App page](https://appshunter.io/ios/app/itruss/id363376468)

Calculate structural loads, spans, and truss requirements for construction projects directly from your iPhone. This tool simplifies complex engineering calculations for field use.

**Highlights:** Load calculation, Span determination, Truss analysis, Field use optimization, Engineering calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### A

[App page](https://appshunter.io/ios/app/a-truss3d-pro/id1201673511)

Analyze space trusses with this tool designed for structural engineers and students. It offers detailed solutions including node displacements, member forces, and stress, with an intuitive 3D interface and an assistant for complex truss creation.

**Highlights:** 3D graphics and UI, Node displacements, member forces, and stress calculations, Truss Assistant Creator for automatic generation, Direct Stiffness Matrix solver, Multiple viewing options (Proportion, Equal, Wireframe), PDF report generation, Support for large space trusses

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iTruss free?

iTruss is free to download, with no in-app purchases.

### Is A free?

A costs $9.99, with no in-app purchases.

### Which is updated more often, iTruss or A?

iTruss ships an update every 23 months, and A every 2 weeks. Most recently, iTruss was updated on June 10, 2026 and A on September 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*